Which of the Following Food Recovery Methods Is Considered 'Non-Perishable

Which of the following food recovery methods is considered 'non-perishable food collection?

A) Collect prepared foods from commercial kitchens.
B) Salvage perishable items from wholesalers and markets.
C) Gather crops from fields that either have already been harvested or are not profitable to harvest.
D) Collecting processed foods from wholesalers and markets